Open Stack

Dims,

Not that I know of; I believe that Cassandra works fine with OpenJDK. See [1] and [2].

From time to time, there have been questions about the supported JDK for Cassandra, a recent one (just that I happen to remember this) tries to make the case that you must use Sun/Oracle JDK. This is not a requirement by any means. See [3].

To the best of my knowledge, OpenJDK is sufficient.

-amrith

[1] http://wiki.apache.org/cassandra/GettingStarted
[2] http://docs.datastax.com/en/cassandra/2.2/cassandra/install/installDeb.html
[3] http://stackoverflow.com/questions/21487354/does-latest-cassandra-support-openjdk


From: Davanum Srinivas [mailto:davanum at gmail.com]
Sent: Saturday, October 10, 2015 8:54 PM
To: OpenStack Development Mailing List (not for usage questions) <openstack-dev at lists.openstack.org>
Subject: Re: [openstack-dev] Scheduler proposal

Not implying cassandra is the right option. Just curious about the assertion.

-- Dims

On Sat, Oct 10, 2015 at 5:53 PM, Davanum Srinivas <davanum at gmail.com<mailto:davanum at gmail.com>> wrote:
Thomas,

i am curious as well. AFAIK, cassandra works well with OpenJDK. Can you please elaborate what you concerns are for #1?

Thanks,
Dims

On Sat, Oct 10, 2015 at 5:43 PM, Joshua Harlow <harlowja at fastmail.com<mailto:harlowja at fastmail.com>> wrote:
I'm curious is there any more detail about #1 below anywhere online?

Does cassandra use some features of the JVM that the openJDK version doesn't support? Something else?

-Josh

Thomas Goirand wrote:
On 10/07/2015 07:36 PM, Ed Leafe wrote:
Several months ago I proposed an experiment [0] to see if switching
the data model for the Nova scheduler to use Cassandra as the backend
would be a significant improvement as opposed to the current design

This is probably right. I don't know, I'm not an expert in Nova, or its
scheduler. However, to make it possible for us (ie: downstream
distributions and/or OpenStack users) to use Cassandra, you have to
solve one of the below issues:

1/ Cassandra developers upstream should start caring about OpenJDK, and
make sure that it is also a good platform for it. They should stop
caring only about the Oracle JVM.

... or ...

2/ Oracle should make its JVM free software.

As there is no hope for any of the above, Cassandra is a no-go for
downstream distributions.

So, by all means, propose a new back-end, implement it, profit. But that
back-end cannot be Cassandra the way it is now.

Cheers,

Thomas Goirand (zigo)


__________________________________________________________________________
OpenStack Development Mailing List (not for usage questions)
Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe<http://OpenStack-dev-request@lists.openstack.org?subject:unsubscribe>
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev

__________________________________________________________________________
OpenStack Development Mailing List (not for usage questions)
Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe<http://OpenStack-dev-request@lists.openstack.org?subject:unsubscribe>
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev



--
Davanum Srinivas :: https://twitter.com/dims



--
Davanum Srinivas :: https://twitter.com/dims
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20151011/c12f79cd/attachment.html>